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Old Jun 18, 2012, 11:27 AM
Brosol
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Canada
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Originally Posted by FyreSG View Post
Yes I know this should not be happening but it is "normal" as I think all the V911s are like this. Do you think we can remove the ring and the problem will go away? Or will the lack of the ring cause evil vibrations?
Yes its normal but I did not want to give up the max servo throws offered by the V911 Rx.

The collar ring presses & rides on top of a bearing, to keep the main shaft from moving down & disengaging the main gear from main motor pinion. Unfortunately the collar screw hole nub sticks out too much & binds against the swash bottom at max servo throw.

Things I did to help prevent binding & inteference with the swash at max servo throw:

- filing down the screw head & collar screw hole nub
- remove the collar & just use a screw, if required file down screw head & use tiny amount of CA glue to keep the screw in place
- use a screw & custom shim ring below the screw
- made a taller custom CF main shaft to move swash higher
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Last edited by Brosol; Jun 18, 2012 at 09:27 PM.
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Old Jun 18, 2012, 11:35 AM
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Joined Sep 2007
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Quote:
Originally Posted by stifa View Post
To my V911 (did already damage to the surroundings...)
Tail motor got hit :
It didn't work in this condition , and didn't work after I pushed the back part back to the motor cylinder with nose pliers .
Any point in trying to save it ? (I got my BNF for now , until next crash )
No. You probably crushed the brushes when you pressed the end plate on (you can pull it back off to see).
I don't know how they do it during manufacturing.
I suspect the stick some type of fixture in the two holes that hold the brushes away from the cummutator during installation.
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Old Jun 18, 2012, 11:38 AM
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Quote:
Originally Posted by Brosol View Post
KKDDMM: http://www.rcgroups.com/forums/showp...postcount=8824

Maybe KKDDMM will help answer firecabbage V911 Clone BNF features & V911 parts compatibilty questions.

FCMan: http://www.rcgroups.com/forums/showp...postcount=6936
So do we know if the yellow from FC is a clone of the V911?

I have one on coming on the slow boat, it would be disappointing if my parts stock don't fit
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Old Jun 18, 2012, 11:39 AM
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Hello KKDDMM,
Will this new yellow V911 clone also bind with stock Tx ?
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Old Jun 18, 2012, 11:40 AM
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Originally Posted by leoski View Post
im using 9x and only trimmed once not every time, seems good enough, don't know if mechanical trim would be any better as doesn't drift in any one direction but just slowly moves around a bit..
Using the TX for trimming gets to be a pain if you have more than one corter.
That's when you'll want to dial in the mechanical trim so you don't have to mess with the TX trims.
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Old Jun 18, 2012, 11:44 AM
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Originally Posted by KKDDMM View Post
I checked the NEW V911.
It can bind with my FS-TH9X-B,and there is no problem at test hover.
So I dont regret.
But......I think this heli is not a product of WL-TOYS.

Swashplate and rudder and maingear is just! just! just as same these of 9C002(Jiuchon)!!!
(But mainblade and linkage and head is different from V911 and 9C002.)

Off course,RX is a new one,
and speed of servo-moving is very quick as V911,
but an angle of movement is smaller than V911.

Obvious advantage is below two parts.
1)swash plate(have 2 pins)
2)skid(it has new batt holder,enclosed type)
---------------------------------------------------------------------------
New receiver ---> yes(only main motor is used connector)
New rotor head ---> yes(but almost same)
New main gear ---> 9C002
New main motor ---> not checked
New swash ---> 9C002
New swash guide ---> at center
New buckles ---> ???
New tail fins (maybe just cosmetic) ---> 9C002(rudder)
New tail motor ---> not checked
New main bldes ---> yes(but almost same)
New tail boom ---> yes(little shorter than V911)
New bushing ---> ???
New Canopy ---> yes(cop of 260A ?)
New connect links ---> yes(but almost same)
New main shaft (looks like carbon fiber?) ---> yes(carbon)
New balance bar. ---> yes(weight is different)
Bummer. Sounds like the yellow bird FC advertised as a V911 is not.

Did yoi notice if the swash has a center ball (looks like it in pictures).
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Old Jun 18, 2012, 11:52 AM
Expert in indoor damage
Israel, Jerusalem
Joined May 2012
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Quote:
Originally Posted by RicksterRC View Post
No. You probably crushed the brushes when you pressed the end plate on (you can pull it back off to see).
I don't know how they do it during manufacturing.
I suspect the stick some type of fixture in the two holes that hold the brushes away from the cummutator during installation.

Thanks. I ordered a new motor . I'll cry for help when it will arrive...
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Old Jun 18, 2012, 11:53 AM
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Quote:
Originally Posted by FyreSG View Post
Yes I know this should not be happening but it is "normal" as I think all the V911s are like this. Do you think we can remove the ring and the problem will go away? Or will the lack of the ring cause evil vibrations?
Does it do it in all directions?
I was thinking maybe you biased things forward for FFF and that is causing the over throw.

You may have found the key to why people say it dives during FFF.
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Last edited by RicksterRC; Jun 18, 2012 at 11:58 AM.
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Old Jun 18, 2012, 12:06 PM
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Quote:
Originally Posted by stifa View Post
Thanks. I ordered a new motor . I'll cry for help when it will arrive...
It should come with new wires.

You have two choices.

1- Try to fish the new wires down the tail boom. Not easy.
I did it by pulling one of the existing wires out.
Carefully CAing the new wires to the other wire still in the tail tube.
Offset them. Glue one, then glue the second down a bit (so that it's not 3 wires think at any point. Three wires won't fit).
If the wires are mucked with glue when they glued the tail boom in, this may be impossible to accomplish.

2- Cut the wires at the aft end of the tail boom at the old motor.
Install the new motor.
Cut the wires on the new motor and solder them to the old wires.
Cover the splices with tape of heatshrink.
Make absolutely sure they can't contact each other - that will most certainly burn outt the power FET (says he who made that mistake )
Maybe not so pretty, but MUCH easier to do.

I recommend option 2 unless you can see that the wires will easily come out at the front end of the tail boom, or your'e replacing the tail boom.

In any event, us a drop of CA between the tail boom mount and the metal part ofthe motor to keep it from rotating.
Cover the end of the new motor with hot melt, or a dab of silicone caulk or something to try and protect the wires, and hopefully prevent a reocurrence.

Best of luck!
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Old Jun 18, 2012, 12:18 PM
Fly Fast, Fly Hard, Fly Fun
rexless's Avatar
Canada, BC
Joined Apr 2012
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Quote:
You may have found the key to why people say it dives during FFF
I just set one of mine up on minimal throttle and held it up while I threw the main stick around. As the servos get to their peak there's a definite slowing of the main rotor. Whether that causes the diving effect on FFF or not is hard to say until we try resolving the problem. For kicks I've moved the servo links to the inner circles and tried again. It still has the problem but it is slightly reduced. At higher RPM it was hard to tell if the slowing is caused by the increased pitch of the blades or if it is actually the pressure on the shaft.
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Old Jun 18, 2012, 12:20 PM
Bvc
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United States, TX, Houston
Joined May 2012
330 Posts
Quote:
Originally Posted by RoboHeli View Post
- Skids have a screw in the rear
My front keeps popping out. Don't want to glue in case I need to replace.
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Old Jun 18, 2012, 12:42 PM
Heli Mania
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PNW
Joined Dec 2010
2,604 Posts
Quote:
Originally Posted by FyreSG View Post
When under high rate, then applied full aileron left and full elevator forward, main shaft rotation is impeded. Check out the video:

http://www.youtube.com/watch?v=QD0rPUnqTBk

This video showed stock V911 main shaft and swashplate. It also manifests on Jiuchon main shaft and swashplate as well. Head speed will be severely reduced when this happens.

Is this "normal"?
Good test ... I'll have to check mine out to see if it does this. I rarely fly outside with high rate set, but last time I did I had a few crashes that seemed strange, so maybe the main shaft was getting bound up like you've shown in the video.
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Old Jun 18, 2012, 12:46 PM
Heli Mania
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Joined Dec 2010
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Quote:
Originally Posted by RoboHeli View Post
Can anybody tell me if my timeline is accurate here?

Rev 1 : The "Corter"

Rev 2 : The "Copter"
- Slightly longer tail boom than rev 1
- New tail motor holder and slightly different tail motor than rev 1
- Skids have a screw in the rear and spares come with the power leads and battery connectors already attached

Rev 3 : This new thing from FireCabbage
See added bold & red statement above.
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Old Jun 18, 2012, 01:10 PM
Brosol
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Canada
Joined Dec 2010
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Quote:
Originally Posted by RicksterRC View Post
Bummer. Sounds like the yellow bird FC advertised as a V911 is not.

Did yoi notice if the swash has a center ball (looks like it in pictures).
If it uses a 9C002 swash then there should be a main shaft pivot ball. KKDDMM mentioned the swash having a swash guide (ball) at the center.
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Last edited by Brosol; Jun 18, 2012 at 01:17 PM.
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Old Jun 18, 2012, 01:21 PM
It flies!!! ... so who cares ?
erdnuckel2's Avatar
Joined Mar 2009
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Quote:
Originally Posted by Brosol View Post
If it uses a 9C002 swash then there should be a main shaft pivot ball. KKDDMM mentioned the swash having a swash guide (ball) at the center.
You can see the pivot ball on one of the pictures of the NEW parts that have already been posted on here ... (however, it is from brass [looking at the picture] and not chrome like the one on the SP270)
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